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2.2.5.2 Mechanical Ventilation
The breathing system is in mechanical ventilation by switching manual/auto switch to auto
position, as shown in the following figures. During inspiration, gas in the bellow flows through
manual/auto switch 41, BYPASS valve 35 or sodalime canister 34, and then is mixed with the
fresh gas and continue to flow through inspiratory valve 33, O2 sensor 39, airway pressure gauge
47, and inspiratory flow sensor 37 to the patient. During expiration, gas breathed out by the patient
flows through expiratory flow sensor 38, expiratory valve 36 and manual/auto switch 41 to the
below, and then enter the anesthetic gas scavenging system (AGSS).
A. Mechanical inspiration mode B. Mechanical expiration mode
2.2.5.3 Manual Ventilation
The breathing system is in manual ventilation by switching manual/auto switch to manual position,
as shown in the following figures. During inspiration, drive gas flows through manual/auto switch
41, BYPASS valve 35 or sodalime canister 34, and then is mixed with the fresh gas and continue
to flow through inspiratory valve 33, O2 sensor 39, airway pressure gauge 47, and inspiratory flow
sensor 37 to the patient, by pressing manual bag. During expiration, gas breathed out by the
patient flows through expiratory flow sensor 38, expiratory valve 36 and manual/auto switch 41 to
the APL valve 43, and then enter the anesthetic gas scavenging system (AGSS).
To AGSS
Drive gas
Fresh gas
Gas breathed out
by the patient
Patient Patient
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